ALDRUM Sludge Thickening System - Drum Thickener - Alfa Laval - #1

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ALDRUM Drum Thickener Midi with an Outlet Adapter (optional) ALDRUM Sludge Thickening System Drum Thickener The ALDRUM Drum Thickener is a range of mechanical sludge thickeners. The ALDRUM Drum Thickener works on the principle of conveying polyelectrolyte treated (flocculated) sludge through a slowly rotating drum filter. The sludge remains in the drum, while the water phase passes through the filter cloth. The Sludge concentration can thus be regulated by adjusting the feed rate, angle and speed of the drum. The ALDRUM Drum Thickeners are equipped with a drum cleaning system consisting of a spray bar for water. The water consumption is low due to intermittent cleaning of the drum using either potable water, final effluent or treated filtrate. The ALDRUM Drum Thickener comes in four sizes. They are all available as separate components or as complete sludge thickening modules. The ALDRUM Drum Thickener is designed to handle sludge extremely gently, which means it gives exceptionally high recovery for nearly all sludge types. An ALDRUM Drum Thickener is usually combined with an ALDRUM Flocculation Reactor. In this combination Alfa Laval is offering five different capacities, Mini, Midi, Maxi, Mega and Mega Duo, i.e. 7-120 m3/h / 30-530 GPM on the basis of 1% DS WAS. Optimisation The ALDRUM Drum Thickeners can be adjusted to suit individual sludge thickening needs. Optimal thickening is found by varying the feed rate, the polymer type and dosage, flocculation mixer speed, drum speed, angle of the drum and the spraying interval. There is also a wide range of different filter cloths available for new applications.